Air heating attachment for stoves



July 7, 1931. T. A. RICHARDS y813579 AIR HEATING ATTACHMENT FOR STOVES Filed Dec. 30. 1929 2 Sm-zstL--Sheet 2 (T :uws/14.0:

f77 v9. 1'0/72 arch Patented .Fully 7, 1931 uur O A. RICDS, F NORTH TROY, NEW YORK i TIN G ATTACHMENT FOR lS'IOlm Application led December 30, 1929. Serial No. 417,517.

This invention relates to stoves and more particularly to a stove of the type used -in kitchens and known as kitchen ranges.

en a person is working in a kitchen, it is often found that air close to the Hoor is cold and that air which passes inwardly beneath a door causes floor drafts. Many persons develop colds due tothe presence of cold air near the Hoor, and, therefore, one object of l@ the invention is to provide a kitchen stove with a conduit through which air near the Hoor may be passed and delivered from the stove near its top in a heated condition.

Therefore, the cold air will be removed from Mg, close to the floor of a room and returned to the room in a heated condition.

Another object of the invention is to so form the air conduit that it may be built into a kitchen stove of a conventional construcg@ tion without necessitating changes in the construction thereof and thereby make it unnecessary to supply a stove of a special construc-' tion in order to allow the air heating conduit to be applied thereto.

1 Another object of the invention is to provide the conduit with closures for its upper and lower ends and improved actuating means for these closures whereb the closures ma be simultaneously adjusted.

@o "lYhe invention is illustrated in the accompanying drawings, wherein Figure 1 is a view looking at the rear of a kitchen stove and illustrating the adjusting means for the closures of the air conduit,

Fig. 2 is a sectional view taken horizontally through the stove'on the line 2 2 of Fig. 3,

Fig. 3 is a vertical sectional view taken through the stove on the line of Fig. 2,

Fig. 4 is a vertical sectional view taken through the stove on the line 1 -4 of Fig. 2, and

Fig. 5 yis a perspective viewof the closure for the lower end of the conduit.

The stove, which is indicated in general by the numeral 1, is of a conventional construction employed when designing kitchen ranges and includes the usual fire-box 2 and oven 3 about which extends a flue 4 so that warm air and roducts of combustion may pass from thel gre-box about the oven and then out through the smoke pipe. The usual feet 5 are provided in order to support the stove 'in spaced relation to the floor. As previously explained, it is often found that cold air accumulates near the floor of a kitchen and causes floor drafts which chill a persons feet and ankles and very often causes a person working in a kitchen to catch cold. In order to remove this cold` air from close to the floor, there has been provided a conduit 6 extending through the stove, as shown in Figs. 2 and 3. Referring to these figures, it will be seen that one portion 7 of the conduit extends vertically with this lower end opening through the bottom of thestove and this portion 7 after passing upwardly communicates with a portion 8 which extends along the top of the oven and then towards the back of the stove, as shown at 9, where it con1 municates with an opening 10 formed in the rear wall thereof. Flanges 11 and 12 extend along the sides and beneath the lower edge of the opening 10 between its inner end and the rear end of the conduit 6 and serve to guide'and limit sliding movement of a closure plate 13 which is movable vertically into and out of position to close the rear end of the conduit. In order to close the lower end of the conduit, there has been provided a door or closure 14 which is hinged to the bottom of the stove, as shown at 15, and this door or closure carries a crank shaft 16. The crank shaft is rotatably engaged through bearings 17 with its crank 18 disposed intermediate the width of the door and the outer end portion of the crank shaft is bent to form a handle 19 projecting rearwardly from the stove. A collar 20 is provided about the lower portion of the conduit to rest upon the bottom of the oven 3 about the opening through which the conduit passes and very effectively seals the opening so that cold air cannot enter the oven.

It is desired to have the two closures 13 and 14 simultaneously moved into and out of close position-s, and in order to do so there has been provided actuating means shown in Fig. 1. The main bar 21 of this actuating means is slidably held in place against the rear wall of the stove by straps 22 and has its lower end formed with an opening 42? through which the outer end of the handle 19 is engaged. Therefore, the handle of the crank shaft will be loosely connected with the lower end of the actuating bar and when the bar is moved upwardly the door 14 will be swung upwardly to a closed position. The actuating bar is permitted to have suHicient side play through the straps 22 so that when it is drawn upwardly by grasping its handle 24 it may be shifted transversely in order to allow a pin 25 projecting rearwardly from the stove to be engaged in a notch or seat 26 formed in the actuating bar. Therefore, the actuating bar after being drawn upwardly to move the door 14 to a closed position may be engaged with the pin 25 and securely but releasably retained in a raised position. Lugs 27 extend from opposite sides of the actuating-bar to rest upon the upper strap 22 and limit downward movement of this bar when the bar is lowered in order to open the door. A pitman 28 extends diagonally against the rear wall of the oven where it is slidably held in place by'straps 29 and this pitman has its lower end pivoted to the bar 21, as shown at 30, and its upper end formed with a longitudinally extending slot 31 through which is engaged a pin 32. The pin 32 projects rearwardly from a short bar 33 and this bar which constitutes a shank for the door or closure 13 passes throu h a guide or strap 34 and has its upper end formed with a longitudinally extending yslot 35 through which passes a pin 36 Yextending rearwardlysfrom the door 13. From an inspection of Fig."1, it will be readily seen that when the actuating bar 21 is grasped by its handle 24 and drawn upwardly the pitman 28 will be shifted longitudinally and impart upward movement to the short bar or shank 33. Therefore, the door or closure plate 13 will be shifted upwardly to a closed position at the same time the door 14 is moved upwardly into closing relation to the lower end of the conduit. Therefore, the

l two doors or closures will be simultaneously moved to a closed position and when the actuating bar is released and allowed to move downwardly the two closures will be'shifted to an opened position.

When the stove is in use and the two doors are opened, air close to the Hoor of a kitchen will be dra-wn into the conduit to its lower end and this air while passing upwardly through the conduit will lbecome heated and will be discharged as heated air through the open rear or upper end of the conduit. Therefore, cold air near the oor of a kitchen will be removed and warmer air will take its place and danger of a person taking cold due to the presence of cold air near a Hoor will be eliminated. When it is desired to use the stove for` baking' punposes, the actuating bar is drawn upwardly and engaged with the pin 25 so that the two Leraars doors will be moved to a closed position and prevented from returning to an opened position. When the doors are closed, air will be prevented from passing through the con duit and the oven heated to its usual temperature. It will thus be seen that when it is desired to use the stove for baking the presence of the conduit will not prevent the oven from being heated to the desired temperature.

Having thus described the invention, I claim:

1. The combination with a stove, of an air heating Hue extending through said stove and having open lower and upper ends whereby air near the Hoor of a room may enter the Hue through the lower end thereof and beV returned to the room in a heated condition from the upper end of the Hue, a' closure for the lower end of said Hue, a closure for the upper end of said Hue, a drawbar slidably carried by said stove and having one end connected with a closure to adjust the closure when the drawbar is moved, and a bar slidably carried by the stove and having its ends connected with the drawbar and the other closure to cause the second closure to be adjusted when the drawbar is moved.

2. The combination with a stove, of an air heating Hue extending through said stove and having open lower and upper ends whereby air near the Hoor of a room may enter `the Hue through the lower end thereof and be returned to the room in a heated condition from the upper end of the Hue, a closure for the lower end of said Hue, a closure for the upper end of said Hue, and actuatin means for said closures consisting of a cran shaft rotatably mounted and having a crank portion connected with the lower closure and a handle, a drawbar slidably carried by said stove and having one end engaged with the handle of said crank shaft, means to releasably retain said bar in a setposition, a shank for the upper closure, and a bar slidably carried b said stove with its ends connected with t e shank and drawbar whereby movement of the drawbar will cause the closures to be simultaneouslyadjusted.

3. The combination with a stove, of an air heating Hue extending throu h said stove and having open lower am? upper ends whereby air near the Hoor of a room may en ter the Hue through the lower end thereof and be returned to the room in a heated condition from the u per end of the Hue, a closure for one end ci) said Hue pivotally mounted, a closure for the other end of said Hue slidably mounted, and actuating means for said closures consisting of a crank shaft rotatably mounted and having a crank portion engaglng the pivoted closure and a handle, a drawbar slidably carried by said stove and having one-end engaged with the handle of said crank shaft, means to releasably retain said bar in a set position with the pivotcd closure closed, a shank for the sliding c10- sure slidably carried by said stove and loosely connected to the sliding closure, and a bar slidably carried by said stove and. having one end pivoted to said drawbar and its other end loosely connected with said shank.

n testimony whereof ax my signature.

THoMAs A. RICHARDS. [La] 

